Automatic drilling and tapping device for powder metallurgy products

Abstract

This utility model discloses an automatic drilling and tapping device for powder metallurgy products, including a worktable, a vibrating feed plate, a clamping unit, and a tapping unit mounted on the worktable. It also includes a mounting frame, a rotating shaft with its upper end inclined away from the vibrating feed plate, a stepper motor, and a positioning unit detachably coaxially mounted on the rotating shaft. The positioning unit includes a positioning ring coaxially fixedly sleeved on the rotating shaft, a tray above the positioning ring, a positioning disc on the tray, and a threaded component threadedly mounted on the upper end of the rotating shaft and capable of contacting the positioning disc. The edge of the positioning disc has several positioning notches evenly distributed along the circumference. The edge of the tray has discharge notches corresponding to these positioning notches, with the discharge notches being smaller than the positioning notches. Loosening the threaded component allows for replacement of the tray and positioning disc; after replacement, the threaded component is tightened again. The operation is simple and convenient, and it improves the practicality and versatility of the equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of metallurgical product processing, specifically to an automatic drilling and tapping device for powder metallurgy products. Background Technology

[0002] Powder metallurgy involves processing metal raw materials into fine powders, mixing different metal powders or metal powders with non-metal powders in a specific ratio, filling the mixture into a mold, and pressing it into the desired shape under immense pressure. The green blank is then heated in a high-temperature, controlled atmosphere furnace, causing the powder particles to bond together firmly through diffusion, thus achieving the final mechanical properties. It can directly press very complex shapes, reducing subsequent processing and resulting in high material utilization.

[0003] During the green die manufacturing process, threads can be integrally formed using a mold. However, molds are expensive, and during sintering, the fine thread shape may undergo unpredictable micro-deformation during shrinkage, causing key parameters such as thread pitch and tooth angle to exceed tolerances, making it impossible to precisely match standard screws. Therefore, manufacturers typically use the more economical post-processing tapping method, which is not only lower in cost but also ensures tapping accuracy.

[0004] Chinese patent application CN201610765748.X, entitled "Continuous Tapping System for Irregularly Shaped Nuts for Vehicles," discloses a continuous tapping system for irregularly shaped nuts used in vehicles. In operation, a vibrating feeder delivers the part to an inclined rotary table clamp. The rotary table clamp rotates, moving the part to the tapping position. A clamping mechanism holds the part in place, and the tapping machine performs the tapping. After tapping, the rotary table clamp moves the part below its incline, where it is automatically unloaded under gravity. This device boasts high tapping efficiency. However, the patent has the following shortcomings: each rotary table clamp can only be used with specific parts. Since parts produced by each manufacturer are constantly being improved and replaced according to market demands, and rotary table clamps are typically assembled with several bolts or pins, replacement is cumbersome. Therefore, an automatic drilling and tapping device for powder metallurgy products needs to be designed. Utility Model Content

[0005] To address the aforementioned technical problems, the purpose of this utility model is to overcome the cumbersome operation of changing the turntable module when processing different metallurgical parts in the prior art.

[0006] To achieve the above objectives, this utility model provides an automatic drilling and tapping device for powder metallurgy products, including a worktable, a vibrating feeder, a clamping unit and a tapping unit mounted on the worktable, and further including: a mounting frame mounted on the worktable, a rotating shaft mounted on the mounting frame and inclined away from the vibrating feeder at its upper end, a stepper motor with its output shaft and the lower end of the rotating shaft being drivenly connected, and a positioning unit that is detachably coaxially mounted on the rotating shaft. The positioning unit includes a positioning ring coaxially fixedly sleeved on the rotating shaft, a tray located above the positioning ring, a positioning disc located on the tray, and a threaded component threadedly assembled on the upper end of the rotating shaft and capable of abutting against the positioning disc. The positioning disc has several positioning notches evenly distributed along the circumferential direction on its edge, and the tray has a discharge notch corresponding to the several positioning notches on its edge. The discharge notch is smaller than the positioning notch.

[0007] Preferably, the upper surface of the positioning ring is coaxially protruding with a first annular conical portion, and the lower surface of the positioning disk is coaxially fixedly connected with a first annular positioning sleeve that fits and contacts the side wall of the first annular conical portion; The upper and lower surfaces of the positioning disk are both coaxially protruding with a second annular conical portion. The upper surface of the tray is recessed with an annular positioning groove that matches the second annular conical portion on the lower surface of the positioning disk. The threaded component is coaxially protruding with a second annular positioning sleeve that matches the second annular conical portion on the upper surface of the positioning disk.

[0008] Preferably, the positioning ring is provided with at least one first positioning groove, and the tray is provided with at least one first positioning part that mates with the first positioning groove. The tray is provided with at least one second positioning groove, and the positioning plate is provided with at least one second positioning part that mates with the second positioning groove.

[0009] Preferably, the mounting bracket is equipped with an auxiliary unit located away from the clamping unit. The auxiliary unit includes a positioning shaft fixedly mounted on the mounting bracket and arranged parallel to the rotating shaft, a detachable stabilizing arm mounted on the positioning shaft, and a positioning sleeve mounted on the end of the stabilizing arm away from the positioning shaft via a bearing seat and capable of being fitted onto the upper end of the rotating shaft.

[0010] Preferably, the top of the rotating shaft has a conical portion protruding coaxially, and the positioning sleeve has a conical groove that matches the conical portion.

[0011] Preferably, the positioning shaft has a circular cross-section, and the outer wall of the positioning shaft has a groove of the same length. The end of the stabilizing arm is fitted with a sliding sleeve that is sleeved on the positioning shaft. The sliding sleeve is threaded with at least one locking bolt whose end can be inserted into the corresponding groove.

[0012] According to the above technical solution, the automatic drilling and tapping device for powder metallurgy products provided by this utility model has the following beneficial effects during use: Firstly, when tapping different products, the corresponding tray and positioning plate can be replaced according to the specific needs of the buyer. By loosening the threaded parts, the tray and positioning plate can be removed from the top of the rotating shaft. Then, the corresponding positioning plate and tray can be installed, and the threaded parts can be tightened. The positioning plate and tray are tightly clamped by the threaded parts and the positioning ring. The operation is simple and convenient, and the practicality and versatility of the equipment are improved. Secondly, several pallets and several positioning plates can be used in combination, and one pallet can be adapted to different positioning plates, reducing investment costs.

[0013] Other features and advantages of this utility model will be described in detail in the following detailed description section; and all parts not covered in this utility model are the same as or can be implemented using existing technology. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of an automatic drilling and tapping device for powder metallurgy products provided in this utility model; Figure 2 This is a partial three-dimensional structural diagram of an automatic drilling and tapping device for powder metallurgy products provided in this utility model; Figure 3 This is a partial sectional view of an automatic drilling and tapping device for powder metallurgy products provided in this utility model; Figure 4 This is a partially exploded schematic diagram of an automatic drilling and tapping device for powder metallurgy products provided in this utility model.

[0015] Explanation of reference numerals in the attached figures 1. Mounting bracket; 2. Rotating shaft; 3. Positioning ring; 4. Tray; 5. Positioning disc; 6. Threaded part; 7. Positioning notch; 8. Discharge notch; 9. First annular conical part; 10. First annular positioning sleeve; 11. Second annular conical part; 12. Second annular positioning sleeve; 13. First positioning part; 14. Second positioning part; 15. Positioning shaft; 16. Stabilizing arm; 17. Positioning sleeve; 18. Conical part; 19. Strip groove; 20. Sliding sleeve; 21. Locking bolt. Detailed Implementation

[0016] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0017] In this utility model, unless otherwise stated, directional words such as "upper," "lower," "inner," and "outer" included in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as limitations on the term.

[0018] like Figure 1-4 As shown, an automatic drilling and tapping device for powder metallurgy products includes a worktable, a vibrating feeder, a clamping unit, and a tapping unit mounted on the worktable. It also includes: a mounting frame 1 mounted on the worktable, a rotating shaft 2 mounted on the mounting frame 1 with its upper end inclined away from the vibrating feeder, a stepper motor with its output shaft connected to the lower end of the rotating shaft 2, and a positioning unit that is detachably coaxially mounted on the rotating shaft 2. The positioning unit includes a positioning ring 3 coaxially fixedly sleeved on the rotating shaft 2, a tray 4 located above the positioning ring 3, a positioning disc 5 located on the tray 4, and a threaded component 6 threadedly assembled on the upper end of the rotating shaft 2 and capable of abutting against the positioning disc 5. The edge of the positioning disc 5 is provided with a plurality of positioning notches 7 evenly distributed along the circumferential direction. The edge of the tray 4 is provided with a discharge notch 8 corresponding one-to-one with the plurality of positioning notches 7. The discharge notch 8 is smaller than the positioning notch 7.

[0019] In the above technical solution, during use, the vibrating feeder delivers the metallurgical product to the positioning notch 7 at the upper inclined end of the positioning plate 5. Then, the stepper motor drives the rotating shaft 2 to rotate, moving the metallurgical product to the position corresponding to the tapping unit. The clamping unit presses on the metallurgical product to fix it in place. The tapping unit starts to tap the metallurgical product. After tapping is completed, the stepper motor continues to drive the rotating shaft 2 to rotate, causing the metallurgical product to move to the lower inclined end of the positioning plate 5. At this time, unloading can be completed under the action of gravity. An auxiliary unloading arm can also be set to avoid the problem of material jamming. The function of the discharge notch 8 is to discharge the metal chips generated during tapping. The worktable, vibrating feeder, tapping unit, stepper motor and clamping unit are all existing technologies. Since they are not shown in the figure, their specific working principles will not be described in this article. When tapping different products, the corresponding tray 4 and positioning plate 5 can be replaced according to the specific needs of the buyer. Loosening the threaded part 6 allows the tray 4 and positioning plate 5 to be removed from the upper end of the rotating shaft 2. Then, the corresponding positioning plate 5 and tray 4 can be reassembled, and the threaded part 6 can be tightened. The positioning plate 5 and tray 4 are tightly clamped by the threaded part 6 and the positioning ring 3. The operation is simple and convenient, and improves the practicality and versatility of the equipment. The tray 4 and positioning plate 5 shown in the figure are suitable for tapping metallurgical products with multi-angled protrusions. When the metallurgical products being processed have similar shapes, only the feeding channel of the vibrating feeder needs to be replaced. If the shapes are completely different, the entire vibrating feeder needs to be replaced. Compared with traditional customized production equipment, this technical solution can reduce the cost required to process different metallurgical products. Several trays 4 and several positioning discs 5 can be used together, and one tray 4 can be adapted to different positioning discs 5, reducing investment costs.

[0020] In a preferred embodiment of the present invention, the upper surface of the positioning ring 3 is provided with a first annular conical portion 9 protruding coaxially, and the lower surface of the positioning disk 5 is fixedly connected with a first annular positioning sleeve 10 that is in close contact with the side wall of the first annular conical portion 9. The upper and lower surfaces of the positioning disk 5 are both coaxially protruding with a second annular conical portion 11. The upper surface of the tray 4 is recessed with an annular positioning groove that matches the second annular conical portion 11 on the lower surface of the positioning disk 5. The threaded part 6 is coaxially protruding with a second annular positioning sleeve 12 that matches the second annular conical portion 11 on the upper surface of the positioning disk 5.

[0021] In the above technical solution, the first annular conical part 9 cooperates with the first annular positioning sleeve 10, the second annular conical part 11 cooperates with the annular positioning groove, and the second annular conical part 11 on the upper surface of the positioning disk 5 cooperates with the second annular positioning sleeve 17. By continuously rotating the threaded part 6 to apply pressure to the positioning disk 5, the tray 4 and the positioning disk 5 can be made to be in a coaxial state with the rotating shaft 2 after being fixed, thereby improving the installation accuracy.

[0022] In a preferred embodiment of the present invention, the positioning ring 3 is provided with at least one first positioning groove, and the tray 4 is provided with at least one first positioning part 13 that matches the first positioning groove. The tray 4 is provided with at least one second positioning groove, and the positioning disk 5 is provided with at least one second positioning part 14 that matches the second positioning groove.

[0023] In the above technical solution, the first positioning disk 5 and the first positioning part 13 cooperate with each other, and the second positioning groove cooperates with the second positioning part 14, which can prevent the tray 4 and the positioning disk 5 from rotating relative to the rotating shaft 2, improve the assembly accuracy, and also reduce the assembly difficulty.

[0024] In a preferred embodiment of the present invention, the mounting frame 1 is equipped with an auxiliary unit located away from the clamping unit. The auxiliary unit includes a positioning shaft 15 fixedly mounted on the mounting frame 1 and arranged parallel to the rotating shaft 2, a stabilizing arm 16 detachably mounted on the positioning shaft 15, and a positioning sleeve 17 mounted on the end of the stabilizing arm 16 away from the positioning shaft 15 via a bearing seat and capable of being fitted onto the upper end of the rotating shaft 2.

[0025] In the above technical solution, the positioning sleeve 17 is fitted onto the upper end of the rotating shaft 2, which can reduce the shaking amplitude of the rotating shaft 2 during use and improve the processing accuracy; when it is necessary to replace the tray 4 and the positioning plate 5, the stabilizing arm 16 is separated from the mounting shaft, and the positioning sleeve 17 is separated from the upper end of the rotating shaft 2.

[0026] In a preferred embodiment of the present invention, a conical portion 18 is coaxially protruding from the top of the rotating shaft 2, and a conical groove matching the conical portion 18 is provided on the positioning sleeve 17.

[0027] In the above technical solution, the conical part 18 and the conical groove can achieve the coaxiality of the rotating shaft 2 and the positioning sleeve 17.

[0028] In a preferred embodiment of the present invention, the positioning shaft 15 has a circular cross-section, and the outer wall of the positioning shaft 15 is recessed with a strip groove 19 arranged in the same length direction. The end of the stabilizing arm 16 is fitted with a sliding sleeve 20 sleeved on the positioning shaft 15. The sliding sleeve 20 is threadedly fitted with at least one locking bolt 21 whose end can be inserted into the corresponding strip groove 19.

[0029] In the above technical solution, by loosening the locking bolt 21 and removing the end of the locking bolt 21 from the slot 19, the sliding sleeve 20 can rotate and slide on the mounting shaft, thereby driving the stabilizing arm 16 to move, driving the positioning sleeve 17 to be fitted onto the conical part or driving the positioning sleeve 17 to separate from the conical part 18. The operation is simple and convenient.

[0030] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0031] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0032] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. An automatic drilling and tapping device for powder metallurgy products, comprising a worktable, a vibrating feeder, a clamping unit, and a tapping unit mounted on the worktable, characterized in that, Also includes: Mounting bracket (1) mounted on the workbench, rotating shaft (2) mounted on mounting bracket (1) with its upper end inclined away from the vibrating feed plate, stepper motor with output shaft connected to the lower end of rotating shaft (2) and positioning unit with detachable coaxial axis mounted on rotating shaft (2); The positioning unit includes a positioning ring (3) coaxially fixedly sleeved on the rotating shaft (2), a tray (4) located above the positioning ring (3), a positioning disk (5) located on the tray (4), and a threaded part (6) threadedly assembled on the upper end of the rotating shaft (2) and able to abut against the positioning disk (5). The edge of the positioning disk (5) is provided with a number of positioning notches (7) evenly distributed along the circumferential direction. The edge of the tray (4) is provided with a discharge notch (8) corresponding to the number of positioning notches (7). The discharge notch (8) is smaller than the positioning notch (7).

2. The automatic drilling and tapping device for powder metallurgy products according to claim 1, characterized in that, The upper surface of the positioning ring (3) is coaxially protruding with a first annular conical part (9), and the lower surface of the positioning disk (5) is coaxially fixedly connected with a first annular positioning sleeve (10) that fits and contacts the side wall of the first annular conical part (9). The upper and lower surfaces of the positioning disk (5) are coaxially protruding with a second annular conical portion (11), the upper surface of the tray (4) is recessed with an annular positioning groove that matches the second annular conical portion (11) on the lower surface of the positioning disk (5), and the threaded part (6) is coaxially protruding with a second annular positioning sleeve (12) that matches the second annular conical portion (11) on the upper surface of the positioning disk (5).

3. The automatic drilling and tapping device for powder metallurgy products according to claim 1, characterized in that, The positioning ring (3) is provided with at least one first positioning groove, and the tray (4) is provided with at least one first positioning part (13) that matches the first positioning groove. The tray (4) is provided with at least one second positioning groove, and the positioning disk (5) is provided with at least one second positioning part (14) that matches the second positioning groove.

4. The automatic drilling and tapping device for powder metallurgy products according to claim 1, characterized in that, The mounting bracket (1) is equipped with an auxiliary unit located away from the clamping unit. The auxiliary unit includes a positioning shaft (15) fixedly mounted on the mounting bracket (1) and arranged parallel to the rotating shaft (2), a detachable stabilizing arm (16) mounted on the positioning shaft (15), and a positioning sleeve (17) mounted on the end of the stabilizing arm (16) away from the positioning shaft (15) via a bearing seat and capable of being fitted onto the upper end of the rotating shaft (2).

5. The automatic drilling and tapping device for powder metallurgy products according to claim 4, characterized in that, The top of the rotating shaft (2) is coaxially protruding with a conical part (18), and the positioning sleeve (17) is provided with a conical groove that matches the conical part (18).

6. The automatic drilling and tapping device for powder metallurgy products according to claim 4, characterized in that, The positioning shaft (15) has a circular cross-section. The outer wall of the positioning shaft (15) has a groove (19) arranged in the same length direction. The end of the stabilizing arm (16) is fitted with a sliding sleeve (20) sleeved on the positioning shaft (15). The sliding sleeve (20) is threaded with at least one locking bolt (21) whose end can be inserted into the corresponding groove (19).

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